Rock drill quality appraisal

rock drill is a piece of equipment used in the quarrying and construction fields. It generates high-pressure gas to drive the hammer head through drilling, water injection, and sand injection to crush or shape hard materials such as rocks and concrete. The
rock drill is an impact equipment and requires a variety of auxiliary media such as oil, water and gas. On the one hand, this puts forward higher requirements for the reliability and safety of the equipment; on the other hand, it also brings certain difficulties to the operation and maintenance of the equipment.
In rock drill quality appraisal cases, Zhongke Testing can provide rock drill quality appraisal services.

1. Appearance inspection: Check the overall appearance of the rock drill, including surface coating, logos, welding quality, etc.
⒉ Functional inspection: Check the basic functions and working characteristics of the rock drill, including the power system, hydraulic system, control system, etc.
3. Safety performance inspection: Check whether the safety devices and protective measures of the rock drill are complete to ensure the safety of operators.
4. Performance indicator inspection: Check whether the key performance indicators of the rock drill meet the design requirements, including work efficiency, excavation capacity, etc.
5. Test operation: Test operation of the rock drill to verify its performance and reliability.

GB 17957-2021 Rock drilling machinery and pneumatic tools Safety requirements
GB 19872-2005 Rock drilling machinery and pneumatic tools Noise limits
GB/T 4974-2018 Air compressors, rock drilling machinery and pneumatic tools Priority pressure
GB/T 5621-2008 Rock drilling machinery and pneumatic tools Performance test method
GB/T 6374-2018 Rock drilling machinery and pneumatic tools Tail handle and bushing fitting dimensions
GB/T 6247-2013 Rock drilling machinery and portable power tools
GB/T 8910-2004 Handheld portable power tools Handle vibration measurement method
GB/T 26548-2021 Handheld portable power tools Vibration test method
JB/T 1674-2020 Air leg rock drill
JB/T 7301-2017 Handheld rock drill
0JB/T 7169-2017 Guide rail hydraulic rock drill
1JB/T 3905-2017 Rock drilling machinery and pneumatic tools General technical conditions for cast aluminum alloy
2

The rubber-tired fully hydraulic rock drilling rig purchased by a construction company did not meet the technical requirements stipulated in the agreement and could not be used normally. This seriously affected production efficiency and production progress, resulting in a delay in the construction period of its mining project, resulting in a dispute with the equipment manufacturer.
was entrusted by the court to conduct an appraisal and analysis on "whether there are quality problems" with the rock drill involved in the case.
identification and analysis results: The
identification and analysis expert group discussed the relevant information and on-site investigation of the rock drill involved in the case and made a comprehensive quality and technical analysis, and made the following suggestions and conclusions: The
rock drill involved in the case did not meet the technical requirements for drilling time (due to rock drill failure) and turning radius in Article 3 of the "Industrial Products Sales Contract". The configuration did not meet the requirements of Article 5.2, and the technical parameters did not meet the relevant requirements in Article 5.3.
was also involved in the case of rock drills that did not comply with national and industry standards for this type of product.